How can you tell if an oxide is basic, acidic, or amphoteric
The problem i'm working on is 6A.17
State whether the following oxides are acidic, basic, or amphoteric: (a) BaO; (b) SO3; (c) As2O3; (d) Bi2O3-.
Indicators of oxides
Moderators: Chem_Mod, Chem_Admin
-
Tanmay Singhal 1H
- Posts: 143
- Joined: Sat Jul 20, 2019 12:16 am
-
Kelvin Chung 1C
- Posts: 50
- Joined: Sat Aug 24, 2019 12:15 am
Re: Indicators of oxides
You can also create a chemical equation with water for oxides.
For example:
(a) BaO + H2O --> Ba(OH)2
The formation of hydroxide (OH-) when BaO is added to water shows that BaO is a basic oxide.
(b) SO3 + H2O --> H2SO4, a strong acid
For (c) and (d), we see that As2O3 and Bi2O3- are amphoteric. An oxide formed with a metalloid or an element along the diagonal metalloid portion of the periodic table is generally considered amphoteric.
For example:
(a) BaO + H2O --> Ba(OH)2
The formation of hydroxide (OH-) when BaO is added to water shows that BaO is a basic oxide.
(b) SO3 + H2O --> H2SO4, a strong acid
For (c) and (d), we see that As2O3 and Bi2O3- are amphoteric. An oxide formed with a metalloid or an element along the diagonal metalloid portion of the periodic table is generally considered amphoteric.
Return to “Properties & Structures of Inorganic & Organic Acids”
Who is online
Users browsing this forum: No registered users and 6 guests